A network node obtains, via a transmission and reception point (TRP) and from a terminal device not served by the network node, a packet comprising channel state information feedback indicating that a further packet is expected to be transmitted from the TRP on a downlink within a predefined time interval. The network node initiates transmission via the downlink of the TRP responsive to the channel state information feedback such that the transmission interferes with an uplink of the terminal device by less than a threshold amount during the predefined time interval.
Legal claims defining the scope of protection, as filed with the USPTO.
3. The network node of claim 1, wherein to initiate the transmission such that the transmission interferes with the uplink by less than the threshold amount, the processing circuitry is configured to initiate the transmission such that transmission power of the transmission via the downlink is less than a threshold power value that is based on the threshold amount of interference.
5. The network node of claim 4, wherein to initiate the transmission using the beamforming weights, the processing circuitry is configured to initiate the transmission in a further downlink channel with further downlink channel coefficients that are orthogonal to the downlink channel coefficients.
7. The network node of claim 6, wherein the L-LTF comprises as many symbols as the terminal device has antennas.
8. The network node of claim 1, wherein the predefined time interval is a next-coming transmission opportunity.
9. The network node of claim 1, wherein the packet comprises an indication that the terminal device requires a response from an intended packet receiver.
10. The network node of claim 1, wherein the packet comprises a null data packet announcement frame.
12. The method of claim 11, further comprising adjusting beamforming weights in response to receiving the channel state information feedback, wherein initiating the transmission such that less than the transmission interferes with the uplink by less than the threshold amount comprises initiating the transmission using the adjusted beamforming weights.
13. The method of claim 11, wherein initiating the transmission such that the transmission interferes with the uplink by less than the threshold amount comprises initiating the transmission such that transmission power of the transmission via the downlink is less than a threshold power value that is based on the threshold amount of interference.
15. The method of claim 14, initiating the transmission using the beamforming weights comprises initiating the transmission in a further downlink channel with further downlink channel coefficients that are orthogonal to the downlink channel coefficients.
17. The method of claim 16, wherein the L-LTF comprises as many symbols as the terminal device has antennas.
18. The method of claim 11, wherein the predefined time interval is a next-coming transmission opportunity.
19. The method of claim 11, wherein the packet comprises an indication that the terminal device requires a response from an intended packet receiver.
20. The method of claim 11, wherein the packet comprises a null data packet announcement frame.
Cooperative Patent Classification codes for this invention. Click any code to explore related patents in that topic.
February 16, 2021
August 2, 2022
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